The "main" differences between the Bohr Model and the Quantum Mechanical Model of the atom are _____. [Select ONE answer]

• The Bohr Model of the atom is the ONLY model we have and the Quantum Model of the atom is just a theory.
• The Quantum model uses advance math (calculus) to predict the position of the electrons AND the Bohr model uses electron clouds to show its electrons.
• The Bohr model was based upon the hydrogen atom, uses "rings" or energy levels around the nucleus AND the Quantum model uses "probability clouds" based upon advance math to show its location of the electron
• The Quantum model was proposed in 1913 AND the Bohr model was proposed in 1926.

In the Quantum Mechanical Model, the energy levels are "distinct" or specific for each level. This is called "quantum". There are also sublevels in each principle level. Select the correct sublevels

• a, b, c, d, and f
• x, y, z, and a
• s, p, d, and f
• q, r, s, and t

We know that sublevels in the principle energy levels (according to our notes) have different shapes. How many positions or shapes does the "f" suborbital have?

• 1 shape and it is spherical

• 3 shapes or positions and it looks like a peanut or figure eight.

• 5 shapes

• 7 shapes

We know that sublevels in the principle energy levels (according to our notes) have different shapes. How many positions or shapes does the "d" suborbital have?

• 1 shape and it is spherical

• 3 shapes or positions and it looks like a peanut or figure eight.

• 5 shapes

• 7 shapes

Which suborbital has three different shapes or orientations?

• s

• p

• d

• f

If n=2, then what is the largest suborbital in this energy level? HINT: Check your notes for the two orbitals at this energy level.

• s

• p

• d

• f

If n=2, what suborbital(s) are present? Hint: Total number of electrons for n=2 is 8 electrons.

• s

• p

• d

• s and p

• p and d

Which quantum number tells me the shape of the suborbital?

• n, also known as the principal #

• l (lower case L), also known as the angular momentum quantum #

• ml or (m, sub L), also known as the the magnetic quantum #

• ms or (m, sub s), also known as the spin quantum #

• None of the above

Which magnetic quantum number is a "code" for the orbital, d?

• 0

• -1, 0, 1

• -2, -1, 0, 1, 2

• -3, -2, -1, 0, 1, 2, 3

If n=3, the spin, ms or (m, sub s) for an electron is ___.

• 3

• 0, 1, 2

• -3, -2, -1, 0, 1, 2, 3

• +1/2 or -1/2

• none of the above